EP 0670335 B1 19980513 - Superabsorbent polymers
Title (en)
Superabsorbent polymers
Title (de)
Superabsorbierende Polymerisate
Title (fr)
Polymères superabsorbants
Publication
Application
Priority
DE 4406951 A 19940303
Abstract (en)
[origin: EP0670335A1] Super-absorbent polymers (A) based upon partially hydrolysed, high mol.wt., linear acrylonitrile homo- or copolymers in which 30-60 mol.% nitrile gps. have been converted into carboxylate gps. 20-60 mol.% nitrile gps. have been converted into carbonamide gps. and 10-20 mol.% nitrile gps. are unchanged. The non-cross linked polymer has a swellability of up to 1000 g/g in water and up to 90 g/g in physiological cooking salt soln.. The prepn. of(A) is also claimed.
IPC 1-7
IPC 8 full level
A01G 25/00 (2006.01); A61F 13/53 (2006.01); A61L 15/60 (2006.01); C08F 8/12 (2006.01); C08F 8/44 (2006.01); C08F 20/42 (2006.01); C08F 20/44 (2006.01); H01B 7/282 (2006.01)
CPC (source: EP US)
C08F 8/44 (2013.01 - EP US); Y02A 30/14 (2017.12 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
EP 0670335 A1 19950906; EP 0670335 B1 19980513; DE 4406951 A1 19950907; DE 59502139 D1 19980618; JP H07268025 A 19951017; TW 311916 B 19970801; US 5496890 A 19960305; US 5567779 A 19961022
DOCDB simple family (application)
EP 95102329 A 19950220; DE 4406951 A 19940303; DE 59502139 T 19950220; JP 6357995 A 19950228; TW 83112351 A 19941230; US 39150695 A 19950221; US 54644695 A 19951020